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A database of postcodes/zipcodes and the corresponding spatial locations in terms of a latitude and a longitude (or similar coordinates in an openly published national coordinate system). If a postcode/zipcode system does not exist in the country, please submit a dataset of administrative borders. Data submitted in this category must satisfy the following minimum conditions

Cadastre is the data holder but they provide no direct mention of the data set on their own site, just a reference to their paid for services. They are however listed as data holder and contact info in the links above as well.

The data dump is a 1.4 GB zip file, that contains 7 other zip files, yielding over 30GB of data when unpacked, split up in 21MB xml files. This is the full BAG data set, containing all addresses and buildings for all of the Netherlands. From this dataset you need to combine several subsets to get to a full postcode list: The ‘NUM’ files give you address index numbers, its georeferences, the house number and the postcode, and a number that corresponds with a street. The ‘OPR’ files give you the corresponding street name, and the number of the place it is in. The ‘WPL’ files give you the place name, and through a separate table also the municipality it is in. (Do note that is does not include postcodes that are not connected to geolocations, such as PO Boxes) See for a detailed description of the search for the Dutch postcode data; http://www.zylstra.org/blog/2013/10/theoretically-open-post-codes-not-so-much-in-practice/

[No changes from 2013]

Update 2015: The opacity described above remains, but same link to data still valid.

The data comes from two different public bodies. Access address registry is available from Þjóðskrá Íslands (National registry). Border polygons come from Landmælingar Íslands (National land survey).

National land survey's website requires registration where a link (which expires in 2 days) is emailed to the user. However the national open data portal, http://opingogn.is contains a direct link to the data without registration. That can be regarded as an official source for this index.

Update: While you need to fill out a form in order to get access to the Ordnance Survey's Code-Point Open dataset, the Office for National Statistics publishes postcode data under an open licence publicly on the web.

Revision: you need to fill a form to get access to this dataset. Then you get a link by email.

However, there are some limitations of this data as it is based off the census, the last of which was in 2010. Thus, over time this database gets out of date versus the authoritative data held by the USPS. Given this, the data is marked as not timely.

In addition, the ZCTA isn’t as complete as the USPS zip-code list as it focused on geographical areas and so its coverage of e.g. PO boxes is more limited. However, given the specifications of this dataset this should not be considered a major limitation and so we have not docked points anywhere else.

More on Zip-Codes and the USPS

The full database of zip codes from the USPS has not yet been found although it looks like products are available for sale, and they are multiple datasets that can help to provide a whole picture.

The ZCTA file produced by the US Census Bureau is useful but is not the full USPS Database of Zip Codes and lookup tables. Instead, this is a census related product produced every 10 years.

"You may have noticed that Census Bureau products refer to “ZIP Code tabulation areas (ZCTAs)” and not simply to ZIP Codes™. The reason that we cannot tabulate data for ZIP Codes is that they do not have distinct geographic boundaries. Designed by the U.S. Postal Service for use in mail delivery, ZIP Codes represent carrier routes made up of individual addresses. A true representation of ZIP Codes would separate out individual housing units and releasing data for them would risk disclosing personally identifiable information". https://ask.census.gov/faq.php?id=5000&faqId=10488

The ZCTAs are not the same as the (regularly updated) USPS postal code lookup files or the postal code database with addresses and Lat Long. Those data are for sale and a number of USPS services are resold.

The dataset (All India Pincode directory with contact details along with Latitude and longitude) is available in CSV format at http://data.gov.in/dataset/all-india-pincode-directory. The information available on OGD India and is completely open for reuse and further studies and research. Many Applications have also been developed using this data. The data is also available at http://www.indiapost.gov.in/pin/. The data consists of pincodes along with post office information like address and postal code. The data can also be searched by location or pincode on http://www.indiapost.gov.in/.

The address and coordinates are shown in most of the open data where possible. It is not accessible in bulk form yet. The information on Open Data Portal is provided by government officials. The information provided by government officials in Kazakhstan (by default) is open for reuse, publishing as cited by the law.

The national address database (BAN) fulfills the requirements to a larger extent as it gives coordinates for all addresses including their zipcodes. It exists in two versions of the base and the first one is the one that is taken into account in this submission (and not in the previous one). We believe this BAN ODBL version can be accepted as an official source because:
- A link to the ODBL version of the BAN, distributed by OSM France, is provided on an official & governmental website: https://adresse.data.gouv.fr/download/ (second link at the bottom of the page) according to the terms of the official BAN convention signed between IGN, La Poste, Etalab and OSM France http://openstreetmap.fr/f/Convention%20BAN%2015%20avril%202015%20SCAN%20SIGNE.pdf
- the data have the same source than the second version mentionned in the previous comment and is formated at and by Etalab (Prime Minister office for open data and open gov)

Although another database could fulfill the requirements to a larger extant : the national address database BAN that gives coordinates for all addresses including their zipcodes. Unfortunately it exists under two different versions:

one fully opendata provided by OpenStretMap France http://openstreetmap.fr/ban which is not accepted as a a relevant source here, so we reviewed the following official on

The administrative boundaries is managed by the geographic institute of Burkina Faso. The data is not available online but it can be request and granted for free by the institute. It is available as shapefiles and there is no license applied even if the institute said that it can be used as the requester desire.

Available for a fee (approx EUR 2000 for weekly updates per year). No plans to make it available as open data. National postal company sent takedown notice to entrepreneurs that scraped and republished some of the data.

One got to run a query to get needed postcode, therefore no option to get data in bulk. No information on postcode boundaries is given, though Google-maps are available for every post office serving respective zipcode.

I can't confirm the existence for Location Datasets because there are no dedicated department(s) nor ministry that focuses storing a database for postcodes/zipcodes in Timor-Leste. However, there are some generic information about districts in Timor-Leste from the official website Ministry of State Administration http://www.estatal.gov.tl/English/Municipal/Municipal_main.html but that doesn't meet the above criteria.

The data of the Italian zipcode are available with a restricted form online (= captcha)
The entire data set is for sale.
The national open data agenda of the italian digital agency announces the release as open data in late 2014.
Currently there are no confirmation.
Poste Italiane doesn't offer also the address number.
This resource is managed by local authorities.
The Italian Institute of Statistics is also involved in this data, but doesn't release address numbers or streets with coordinates.
The current status of the release of adddress numbers is in a study (often updated) by Cesare Gerbino

QA review - Changed the answered so they will refer to the dataset in bulk and not to the online application. Therefore - Publicly available, not for free, not online, is machine readable.

Short after introducing the new address system called "Road Name Address," the Republic of Korea has also reformed the postal code system into the so-called "State Basic District System." Addresses with the new postal codes are freely available in bulk on the site of "Road Name Address," but the dataset does not include coordinates.

The dataset which meets the minimum criteria can be found on the Website of the National Spatial Information Clearinghouse (NSIC). However, the dataset is not publicly available requesting the registration. However, people can freely download in bulk daily changes of address data with its coordinates on the Korean Website of "Road Name Address."

There is a administrative map managed by the national geographic institute. This data contain the administrative borders of each administrative area. The data is not available online and must be paid when requested.

The Isle of Man Government owns the Isle of Man Post Office.
Postcode searches require a registered email address (free) and rate limited to 10 searches per day.
The government IT department sells the postcode/geolocation dataset to a very small customer base of couriers, dairy co-operative doorstep milk delivery service, Tesco, etc.
An IT services company (http://www.afd.co.uk/) also resell geolocation datasets and data cleansing services.

Sep 2015: not all data available online or in one place but specific meta data available on request from public counters

Sep 2015: clarified that the Isle of Man Post Office supplies postcodes to UK Royal Mail PAF under a contract but it is unclear if the contract is exclusive or non-exclusive and a request to establish legal certainty some time ago has still not had a response (unsurprisingly if non-exclusive lol)

Sep 2015: coordinates are in ESRI GIS system (Cabinet Office) and UNIFORM gazetteer (Department of Infrastructure) as northings/eastings but standard algorithms to convert to lat/long kn Google Maps, etc.

This information would probably be gathered from the Land and surveys department. The information is not publicly available as in on the website for download or utilize, however, it can be requested from the department.

There is no national zipcode system in use in Cameroon. The Government has a project with the African Development Bank to build such a database for 2015 year.
But there is data of the national administrative boundaries, produced by the National Institute of Cartography.
This institute produces even guides for regions, cities and villages. But these guides aren't free of charge.

Canada Post is a Crown corporation of the Government of Canada. Commercial use of Canada Post's Postal Code Address Data (PCAD) product has been quoted at $50,600 per year. Canada Post claims copyright in its database of postal codes. It has recently defended its claim by filing a lawsuit against Geolytica: https://cippic.ca/en/copyright/geolytica-statement-of-defence.

The data are available over the web and in bulk but these are restricted and behind are not for free.

The postal codes are made up of province, canton and districts (each assigned a number) and made available via an interactive form, one at a time. The map data, available at http://www.snitcr.go.cr/ does include the breakdown of provinces, cantons and districts so the data can be found and merged together but it is not easily accessible.

From the Department of Statistics Malaysia official portal, there datasets are not available. Given that the institution is in the Federal State territory, submitting for Freedom of Information request is impossible because there is no Freedom of Information Act for the Federal State Wilayah Persekutuan.

The postcode team built the website extensively throughout the world. The website currently provides postcode inquiry service around hundreds of countries in 50+ languages. There are more than 40,000,000 postcode / ZIP code data in http://PostCodeBase.com.

The postcode information for Jamaica are clearly stated but cannot be downloaded on the computer due to not being machine readable (PDF, CSV, etc).

There is no reference on what ministry/agency is in charge with postal code database, if there is a unified and official one. Post codes are available at a cost through the GeoData company service:
http://www.geopostcodes.com/Barbados

The data that is available from the official postal website by search does not have geolocations nor corresponding geospatial locations in terms of a latitude and a longitude (or similar co-ordinates in an openly published national co-ordinate system) hence the answer is data does not exist (no changed from 2013).

Based from the information gathered for the postcodes, they are retrieved by downloading the zip file. Extracting the zip file will show a variety of folders and files where there are additional formats (kml, json)

Here is an extract from the website terms of use (there is no specific licence attached to the post codes database):

Unless otherwise indicated, users are welcome to copy, download or print any of the visible text or images on this website for personal and non-commercial use.

Users wishing to utilise content for their own commercial purposes may only do so with prior written permision of the website owner. Requests for commercial use may be submitted by e-mail to customer.services@postoffice.co.za

Oman does not use a postcodes/zipcode system that translates into a physical address. The postal system in Oman uses PO Boxes which are based at postal offices in each city and which the users have to visit to collect their mail.

Slovak Republic is a small country, so there is only about 10^4 different postcodes altogether. List of those can be obtained from Slovak Post Office at http://www.posta.sk/stranky/postove-smerovacie-cisla . License is not clearly stated and there is Copyright notice at the page providing the download so "no" is filled.

Latitude and longitude information is not provided in the data source but other data source (https://zbgis.skgeodesy.sk/tkgis/default.aspx - intended for users, no API) can be used to locate towns (but not streets). Thus the data is considered as NOT available.

A database of postcodes/zipcodes and a corresponding geospatial locations in terms of a latitude and a longitude (or similar co-ordinates in an openly published national co-ordinate system) DOES NOT EXIST You can only get a list of postcodes, no geospatial information. At the same time we now that by url http://www.russianpost.ru/rp/servise/ru/home/postuslug/searchops1#resultancor we could find a web form using that we could find postcode by address.
So we know that address data exists but it is not publicly available

Comment: No changes since 2013 year
Comment: No changes since 2014 year

CTT was the Portuguese national public mail service until 9 September 2014. Since this date it became a private company and there is no other public portal where the same data is made publicly available.

It shows the mapping between locations (towns, street addresses, etc.) and relevant ZIP-codes but does not contain geo-coordinates nor is there another service where one could resolve ZIP-codes to geo-coordinates.

Here (http://eservice.postcode.post.ir/) you can search for codes by entering the full address. However, we could not find a database of postal codes and corresponding address. No coordinates are shown in all cases.

The website of the postal service has details about the location of postal offices, but does not provide any details on postal codes and their correspondence geospatial locations. It is suspected that Egypt does not use an address system that links postal addresses to physical locations.

In Algeria, the postal codes of province capitals are composed of the province code as in ISO 3166-2:DZ and three zeros, for example: 16000 for Algiers, while the postal codes of other cities, towns, and villages in the province are the provincial code followed by three numerals. [Wikipedia]

The Algerian Post website (http://www.poste.dz/) has a link to search for postal codes "Rechercher Un Code Postal", but it is not working. The link is removed from most of the pages now, though, we found it on this page (http://www.poste.dz/Actualite/actua.php#) which seems to be an older version of the site that was not updated.

In 2012 Trinidad implemented a postal code system. The Trinidad & Tobago Postal Corporation is responsible for managing its implementation. The Corporation's website provides information about the implementation of the programme, its benefits and the coding system.

However, it does not currently provide information to assist a person finding out a specific postal code if they know the address. The website states that "When we are ready, TTPost will provide a Postal Code Finder on our website. Customers can also find out their postal code by contacting any TTPost outlet.".

The data is complete in the sense that it contains the list of zip codes for the country. Howerver, there is no coordinates or georeferenced data related to each zip code and therefore is does no comply with the definition of the location dataset (ZIP+GEO)

Individual CEPs are supplied free, but a full-copy of all CEPs aren't free (not available in bulk)... The access to database queries is free as Internet-webservice: CEP-to-address, and address-to-CEP, human and machine resolution services... So this is a cause of ambiguity in this form: CEP is individually free, but must pay to access on bulk.

The National Geographical Institute has administrative boundaries data. But there is no evidence about the availability.

Mali has a mailing system with post codes but we were unable to find reference regarding what national agency is responsible. The Mali Post is down for maintenance. The post codes dataset is available, at a cost, from GeoData company http://www.geopostcodes.com/Mali

No evidence showing from the President's Officer website that the data exists. I have found a 3rd party website http://www.ourweb.info/01/directory/myanmar/005/ that provides a list of ministries official websites but some of these websites are not found.
Kindly note that there is a high possibility that Myanmar government did not update each of these ministries websites so there is an error while trying to gain access to these websites.
Myanma Posts and Telecommunications (Burmese: မြန်မာ့ဆက်သွယ်ရေးလုပ်ငန်း), abbreviated MPT) is a state owned enterprise in Myanmar under the supervision of Ministry of Communications and Information Technology. MPT operates the country's postal system.